Problem #1: (a) The following data shows the number of hours that 8 hospital patients slept following the administration of a certain anesthetic:
7, 6, 9, 12, 6, 7, 10, 4,
Find a 98% confidence interval for the average hours slept following the administration of the anesthetic for the sampled population.
(b) Which of the following statements is true regarding part (a)?
Problem #1(a): confidence interval enter your answer in the form a,b (numbers correct to 2 decimals)
(A) The population must be normal. (B) The population does not need to be normal. (C) The population standard deviation σ must be known. (D) The population mean must be inside the confidence interval. (E) The population must follow a t-distribution.
Problem #1(b): Select